Overview
The AD8604ARU is a quad rail-to-rail input and output, precision CMOS operational amplifier produced by Analog Devices Inc. This amplifier is part of the AD8601/AD8602/AD8604 family, known for its high performance and versatility. It operates on a single supply voltage ranging from 2.7 V to 5.5 V, making it suitable for a variety of applications, including battery-powered instrumentation and automotive systems.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Supply Voltage | 2.7 V to 5.5 V | |
| Offset Voltage (VOS) | 80 µV to 600 µV | VCM = 0 V to 1.3 V, -40°C ≤ TA ≤ +85°C |
| Input Bias Current (IB) | 0.2 pA to 60 pA | -40°C ≤ TA ≤ +85°C |
| Input Offset Current (IOS) | 0.1 pA to 30 pA | -40°C ≤ TA ≤ +85°C |
| Common-Mode Rejection Ratio (CMRR) | 68 dB to 83 dB | VCM = 0 V to 3 V |
| Large Signal Voltage Gain (AVO) | 30 to 100 V/mV | VO = 0.5 V to 2.5 V, RL = 2 kΩ, VCM = 0 V |
| Slew Rate (SR) | 6 V/µs | RL = 2 kΩ |
| Settling Time (tS) | <1.0 µs | To 0.01% |
| Full Power Bandwidth (BWp) | 360 kHz | <1% distortion |
| Gain Bandwidth Product (GBP) | 8.4 MHz | |
| Phase Margin (Φo) | 55 Degrees | |
| Voltage Noise Density (en) | 33 nV/√Hz at f = 1 kHz | |
| Current Noise Density (in) | 0.05 pA/√Hz at f = 1 kHz | |
| Supply Current/Amplifier (ISY) | 750 µA to 1200 µA | VO = 0 V, -40°C ≤ TA ≤ +125°C |
Key Features
- Rail-to-rail input and output capability
- Low offset voltage: up to 600 µV maximum
- Low supply current: 750 µA per amplifier
- Wide bandwidth: 8 MHz
- High slew rate: 6 V/µs
- Low distortion and no phase reversal
- Unity-gain stable
- Qualified for automotive applications
Applications
- Current sensing
- Barcode scanners
- PA controls
- Battery-powered instrumentation
- Multipole filters
- Sensors
- ASIC input or output amplifiers
- Audio applications
Q & A
- What is the supply voltage range for the AD8604ARU?
The AD8604ARU operates on a single supply voltage ranging from 2.7 V to 5.5 V.
- What is the maximum offset voltage for the AD8604ARU?
The maximum offset voltage is up to 600 µV.
- What is the typical supply current per amplifier for the AD8604ARU?
The typical supply current per amplifier is 750 µA.
- What is the bandwidth of the AD8604ARU?
The bandwidth is 8 MHz.
- What is the slew rate of the AD8604ARU?
The slew rate is 6 V/µs.
- Is the AD8604ARU unity-gain stable?
Yes, the AD8604ARU is unity-gain stable.
- What are some common applications for the AD8604ARU?
Common applications include current sensing, barcode scanners, PA controls, battery-powered instrumentation, multipole filters, sensors, ASIC input or output amplifiers, and audio applications.
- Is the AD8604ARU qualified for automotive applications?
Yes, the AD8604ARU is qualified for automotive applications.
- What is the common-mode rejection ratio (CMRR) of the AD8604ARU?
The CMRR is 68 dB to 83 dB for VCM = 0 V to 3 V.
- What is the full power bandwidth of the AD8604ARU?
The full power bandwidth is 360 kHz with less than 1% distortion.
